CS ADR-DSN.G.375 General

ED Decision 2014/013/R

Aeroplane de-icing/anti-icing facilities should be provided at an aerodrome where icing conditions are expected to occur.

GM1 ADR-DSN.G.375 General

ED Decision 2014/013/R

Combinations of ice, snow and/or standing water may, especially when rain, rain and snow, or snow is falling, produce substances with specific gravities in excess of 0.8. These substances, due to their high water/ice content, should have a transparent rather than a cloudy appearance and, at the higher specific gravities, should be readily distinguishable from slush.

CS ADR-DSN.G.380 Location

ED Decision 2022/006/R

(a) De-icing/anti-icing facilities should be provided either at aircraft stands or at specified remote areas.

(b) The remote de-icing/anti-icing facilities should be located to be clear of the obstacle limitation surfaces, not cause interference to the radio navigation aids and be clearly visible from the air traffic control tower for clearing the treated aeroplane.

[Issue: ADR-DSN/6]

GM1 ADR-DSN.G.380 Location

ED Decision 2022/006/R

(a) The de-icing/anti-icing facilities should be so located as to ensure that the holdover time of the anti-icing treatment is still in effect at the end of taxiing, and when take-off clearance of the treated aeroplane is given.

(b) To further maximise departure flow rates for all aeroplanes, the location and size of de-icing/anti-icing facilities should be such that they allow for bypass taxiing during de-icing/anti-icing operations. Additional guidance is given in ICAO Doc 9640, Manual of aircraft ground de-icing/anti-icing operations, paragraph 8.5(e).

(c) Remote de-icing/anti-icing facilities located near departure runway ends or along taxiways are recommended when taxi times from terminals or off-terminal de-icing/anti-icing locations frequently exceed holdover times.

(d) Remote facilities compensate for changing weather conditions when icing conditions or blowing snow are expected to occur along the taxi-route taken by the aeroplane to the runway meant for take-off.

(e) The remote de-icing/anti-icing facilities should be so located as to provide for an expeditious traffic flow, perhaps with a bypass configuration, and not require unusual taxiing manoeuvre into and out of the pads.

(f) The jet blast effects caused by a moving aeroplane on other aeroplanes receiving the anti-icing treatment or taxiing behind should have to be taken into account to prevent degradation of the treatment.

[Issue: ADR-DSN/3]

[Issue: ADR-DSN/6]

CS ADR-DSN.G.385 Size of de-icing/anti-icing pads

ED Decision 2014/013/R

(a) The safety objective of the de-icing/anti-icing pad dimensions is to allow safe positioning of aircraft for de-icing/anti-icing, including sufficient room for the safe movement of de-icing vehicles around the aircraft.

(b) The size of a de-icing/anti-icing pad should be equal to the parking area required by the most demanding aircraft in a given category with at least 3.8 m clear paved area all around the aeroplane for the movement of the de-icing/anti-icing vehicles.

GM1 ADR-DSN.G.385 Size of de-icing/anti-icing pads

ED Decision 2016/027/R

(a) It is recommended that the aerodrome have facilities with a de-icing/anti-icing capability equivalent to the maximum peak hour departure rate that can be managed by the ATC units during de-icing/anti-icing operations. Additional guidance is given in ICAO Doc 9640, Manual of aircraft ground de-icing/anti-icing operations, paragraph 8.3.

(b) The number of de-icing/anti-icing pads required should be determined based on the meteorological conditions, the type of aeroplanes to be treated, the method of application of de-icing/anti-icing fluid, the type and capacity of the dispensing equipment used, and the volume of traffic and departure flow rates.

(c) An aeroplane de-icing/anti-icing pad consists of:

(1) an inner area for parking of an aeroplane to be treated; and

(2) an outer area for movement of two or more mobile de-icing/anti-icing equipment.

(d) Where more than one de-icing/anti-icing pad is provided, consideration should be given to providing de-icing/anti-icing vehicle movement areas of adjacent pads that do not overlap but are exclusive for each pad. Consideration should also be given to bypassing of the area by other aeroplanes with the clearances specified in CS ADR-DSN.G.400.

[Issue: ADR-DSN/3]

CS ADR-DSN.G.390 Slopes on de-icing/anti-icing pads

ED Decision 2014/013/R

The de-icing/anti-icing pads should be provided with suitable slopes:

(a) to ensure satisfactory drainage of the area;

(b) to permit collection of all excess de-icing/anti-icing fluid running off an aeroplane; and

(c) not to hinder the movement of aircraft on or off the pad.

GM1 -ADR-DSN.G.390 Slopes on de-icing/anti-icing pads

ED Decision 2014/013/R

It is recommended that the drainage arrangements for the collection and safe disposal of excess de-icing/anti-icing fluids prevent ground water contamination.

CS ADR-DSN.G.395 Strength of de-icing/anti-icing pads

ED Decision 2014/013/R

The de-icing/anti-icing pad should be capable of withstanding the traffic of the aircraft it is intended to serve.

GM1 ADR-DSN.G.395 Strength of de-icing/anti-icing pads

ED Decision 2014/013/R

Consideration should be given to the fact that the de-icing/anti-icing pad (in common with an apron) should be subjected to a higher density of traffic and, as a result of slow-moving or stationary aircraft, to higher stresses than a runway.

CS ADR-DSN.G.400 Clearance distances on a de-icing/anti-icing pad

ED Decision 2016/027/R

(a) The safety objective of the clearance distances on a de-icing/anti-icing pad is to provide safe separation between an aircraft using the stand and any adjacent building, aircraft on another stand and other objects.

(b) A de-icing/anti-icing pad should provide the following minimum clearances between an aircraft using the stand and any adjacent building, aircraft on another stand and other objects:

Code Letter

Clearance

A

3.8 m

B

3.8 m

C

4.5 m

D

7.5 m

E

7.5 m

F

7.5 m

(c) If the pad layout is such as to include bypass configuration, the minimum separation distances specified in Table D-1, column (13) should be provided.

(d) Where the de-icing/anti-icing facility is located adjoining a regular taxiway, the taxiway minimum separation distance specified in Table D-1, column (11) should be provided (see Figure G-1).

C:\Users\matiles\Desktop\G-1.png

Figure G-1. Minimum separation distance on a de-icing/anti-icing facility

[Issue: ADR-DSN/2]

[Issue: ADR-DSN/3]

GM1 ADR-DSN.G.400 Clearance distances on a de-icing/anti-icing pad

ED Decision 2022/006/R

(a) The separation criteria should take into account the need for individual de-icing/anti-icing pads to provide sufficient manoeuvring area around the aircraft to allow simultaneous treatment by two or more mobile de-icing/anti-icing vehicles and sufficient non-overlapping space for a vehicle safety zone between adjacent de-icing pads and for other de-icing/anti-icing pads.

(b) The minimum clearance distance of 3.8 m is necessary for the movement of de-icing/anti-icing vehicles round the aircraft.

(c) Where the de-icing/anti-icing facility is located in a non-movement area, the minimum clearance distance can be reduced.

[Issue: ADR-DSN/6]